mjb, I can share my experience. I have B&W 803N speakers, which have 89db sensitivity (I think), and are known to be "difficult to drive" and not "tube friendly". I had a Primaluna Dialogue One Integrated Amp (38wpc) running them for three years. A fellow forum member who lives near me came by one day. He was astounded at how smooth and natural they sounded together. I was very happy with the synergy, and I think they worked very well as a system. So, I say poo-poo to those who say that towers have to be sensitive to work with tubes. Maybe some tube amps... but not the PL.
From there, I liked the PL so much that I upgraded to the Dialogue Premium HP Integrated Amp. Double the power, double the fun. I love it, and people who come by to hear it agree. It's great.
So, to answer your original question, a Primaluna tube amp will run your tower speakers just fine. I agree that you want to make sure the speakers and amp work well together, and you can determine this by taking your speakers to the store (I did), or by getting an in-home demo of the integrated amp. Either way is a good thing to do so you can be more sure.
And, further, yes, it will give you room to grow. I upgraded from KT88 to KT120 in my Dialogue One, and later moved to the more powerful PL HP. In that one, I upgraded from the stock EL34 to KT120s, and will soon move to KT150. Plenty of room to grow. In fact, much more room to grow than with any SS equipment I've owned. All of these changes made my system incrementally better, without having to sell an expensive piece of gear to buy something else expensive.
WRT to the Primaluna, I have been on this journey for about 10 years now, and have been through several amps, preamps, and integrated amps. I was very happy with the D-One, but got the bug to move up. The PL HP is a definite keeper. It's been a year and a half, and while I could consider other speakers, I see no reason to trade this integrated amp, ever.
Hope that's helpful.
From there, I liked the PL so much that I upgraded to the Dialogue Premium HP Integrated Amp. Double the power, double the fun. I love it, and people who come by to hear it agree. It's great.
So, to answer your original question, a Primaluna tube amp will run your tower speakers just fine. I agree that you want to make sure the speakers and amp work well together, and you can determine this by taking your speakers to the store (I did), or by getting an in-home demo of the integrated amp. Either way is a good thing to do so you can be more sure.
And, further, yes, it will give you room to grow. I upgraded from KT88 to KT120 in my Dialogue One, and later moved to the more powerful PL HP. In that one, I upgraded from the stock EL34 to KT120s, and will soon move to KT150. Plenty of room to grow. In fact, much more room to grow than with any SS equipment I've owned. All of these changes made my system incrementally better, without having to sell an expensive piece of gear to buy something else expensive.
WRT to the Primaluna, I have been on this journey for about 10 years now, and have been through several amps, preamps, and integrated amps. I was very happy with the D-One, but got the bug to move up. The PL HP is a definite keeper. It's been a year and a half, and while I could consider other speakers, I see no reason to trade this integrated amp, ever.
Hope that's helpful.